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  <style>
	.all1{width:200px;height:auto;text-align:center;background:#fff;}
	.math{width:200px;height:auto;text-align:center;background:#fff;}

	</style>
  <body>
	<div class="all1">物理
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	  <img  src="/b31.gif">
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	</div>
	<div class="math">数
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	</div>
	
  </body></html>
